netfilter: nf_tables: fully validate NFT_DATA_VALUE on store to data registers
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fully validate NFT_DATA_VALUE on store to data registers register store validation for NFT_DATA_VALUE is conditional, however, the datatype is always either NFT_DATA_VALUE or NFT_DATA_VERDICT. This only requires a new helper function to infer the register type from the set datatype so this conditional check can be removed. Otherwise, pointer to chain object can be leaked through the registers.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fully validate NFT_DATA_VALUE on store to data registers register store validation for NFT_DATA_VALUE is conditional, however, the datatype is always either NFT_DATA_VALUE or NFT_DATA_VERDICT. This only requires a new helper function to infer the register type from the set datatype so this conditional check can be removed. Otherwise, pointer to chain object can be leaked through the registers.
05 / REFERENCES
Further evidence
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/23752737c6a618e994f9a310ec2568881a6b49c4
- https://git.kernel.org/stable/c/40188a25a9847dbeb7ec67517174a835a677752f
- https://git.kernel.org/stable/c/41a6375d48deaf7f730304b5153848bfa1c2980f
- https://git.kernel.org/stable/c/461302e07f49687ffe7d105fa0a330c07c7646d8
- https://git.kernel.org/stable/c/5d43d789b57943720dca4181a05f6477362b94cf
- https://git.kernel.org/stable/c/7931d32955e09d0a11b1fe0b6aac1bfa061c005c
- https://git.kernel.org/stable/c/952bf8df222599baadbd4f838a49c4fef81d2564
- https://git.kernel.org/stable/c/efb27ad05949403848f487823b597ed67060e007
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42070.json
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://nvd.nist.gov/vuln/detail/CVE-2024-42070